﻿// -----------------------------------------------------------------------
// <copyright company="www.3WayWebdesign.de">
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// </copyright>
// 
// <author>Michael Morbach</author>
// <email>Michael@3waywebdesign.de</email>
// <web>http://www.3waywebdesign.de</web>
// ----------------------------------------------------------------------

using System.Linq;
using System.Windows.Controls;
using Microsoft.Practices.Prism.Regions;
using Microsoft.Practices.Unity;
using NLog;
using Tww.Paf.Api.Base;
using Tww.Wpf.Controls.Controls.Shared.Enums;

namespace Tww.Paf.Api.Components.NavigationMenu
{
    public class NavigationMenuService : PafServiceBase, INavigationMenuService
    {
        #region  - Felder (privat) -

        private static readonly Logger Logger = LogManager.GetCurrentClassLogger();

        #endregion

        #region  - Konstruktoren -

        /// <summary>
        ///     Initializes a new instance of the <see cref="NavigationMenuService" /> class.
        /// </summary>
        /// <param name="unityContainer">The unity container.</param>
        public NavigationMenuService(IUnityContainer unityContainer)
            : base(unityContainer)
        {
        }

        #endregion

        #region  - INavigationMenuService Members -

        /// <summary>
        ///     Minimizes the navigation menu.
        /// </summary>
        public void MinimizeNavigationMenu()
        {
            Logger.Trace("Try to minimize the Menu");
            this.ChangeNavigationMenuElementSize(ElementSize.Minimized);
        }

        /// <summary>
        ///     Maximizes the navigation menu.
        /// </summary>
        public void MaximizeNavigationMenu()
        {
            Logger.Trace("Try to maximize the Menu");
            this.ChangeNavigationMenuElementSize(ElementSize.Maximized);
        }

        /// <summary>
        ///     Closes the navigation menu.
        /// </summary>
        public void CloseNavigationMenu()
        {
            Logger.Trace("Try to collapse the Menu");
            this.ChangeNavigationMenuElementSize(ElementSize.Collapsed);
        }

        /// <summary>
        ///     Merges the navigation menu with another compatible Control.
        /// </summary>
        /// <param name="navigationMenuComponent">The navigation menu component to merge with.</param>
        public void MergeNavigationMenu(Control navigationMenuComponent)
        {
            Logger.Trace("Merging current Menu with {0}", navigationMenuComponent);
            this.RegionManager.AddToRegion(RegionNames.NavigationMenuRegion, navigationMenuComponent);
        }

        #endregion

        #region  - Methoden (privat) -

        /// <summary>
        ///     Changes the size of the navigation menu element.
        /// </summary>
        /// <param name="elementSize">Size of the element.</param>
        private void ChangeNavigationMenuElementSize(ElementSize elementSize)
        {
            var navigationMenu =
                RegionManager.Regions[RegionNames.LeftFlyoutRegion].Views.OfType<INavigationMenu>()
                    .FirstOrDefault();

            if (navigationMenu != null)
            {
                ((Control) navigationMenu).Dispatcher.Invoke(() => navigationMenu.SwitchElementSize(elementSize));
            }
            else
            {
                Logger.Warn("NavigationMenu is not existing in Region {0}", RegionNames.LeftFlyoutRegion);
            }
        }

        #endregion
    }
}